/**
 * Load a file from local file system
 * @param filename
 * @returns
 */
export declare function readFileAsArrayBuffer(filename: string): Promise<ArrayBuffer>;
/**
 * Load a file from local file system
 * @param filename
 * @returns
 */
export declare function readFileAsText(filename: string): Promise<string>;
export declare function requireFromFile(filename: string): Promise<any>;
export declare function requireFromString(code: string, filename?: string, options?: {
    prependPaths?: string[];
    appendPaths?: string[];
}): any;
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